Spool with removable head



Nov. 13, 1951 J, SALKlN 2,575,131

sPooL WITH REMovABLE HEAD Filed oct. 4, 1949 ATTO R N EVS Patented Nov. 13, 1951 Y Jeromey Sa'lltingif.Odellton,` Md., assigner to The National :Plas.tiefProdwtseomxzamtrodentom M defa pornoration-v ,of Maryland@ Thisiinvention relates 1tof-irnproyementsl -in material ion the-pore :has-1 been used vup, a the reels'or-spools and morey particularlylto: the pro-.1 flangesifare-'removed and placed on-:a neWvcore, vision of: means Afor detachably securin'gitogethenzt and-the oldwcorepwhichmay be inexpensivegxis a barrelor core and theven-d -flangesioffa reelforff-zf disposed ofw spool;4 Inl'-carryingfout'theseveral features4 ofi-the It`vfis1an'objectfoffthe p.resent#inventiontofpromV inyentionvthenpresent applicano'has devisedza a. videha reel or -spool -withi detachable iianges thatnovel and improvedwmeans'for "securing :the-`r maylbe readily'attached or detachedffromwthe .fanges-stoi the end of" the tubular barrel Ior-eore barrel or core tlrereofzf which permits the--assembly'of the-spool at anyv It is `a further object `oihthe inventionto ypro- Ui time-.intesa rigidly complete1 whole merely-by they videf-iiangesfon a reel orspool-thatcan' be readw. operation. oie-pushing ondriving *the endV angesa. ily=attached ondetached from Ythevbarrelf-therese. into Jplace-lonffthe ends ot-'thevabarrel (Jr-core.' of'and-used againiwithianother corel Thi'sidevicefcomprises-broadly the securingzota It'is a stillfurther object 0in-the` invention :to: plurality of attaching `orfuniting members--to s Y provide-"prongs:attachedto;thelangesl offa reelel;eaehfiiangefwhich are-so y.disposed thatthey will?,

or'fspool tov permit attachment and. detachment: engagefI then-inner'- suriace of .thewbarrelorzcorer1 ofthe angesftothercore ofra spool or reel.l when '-pushed-orfdriven therein soas to rigidly Other objectsan-d Vthe-nature and'aclvantagesfy unite'theffiangeto the Gore. Y of-theinstantinventionpwillbe apparent from.; Referringfmore@specioally to the drawingp;4 the. followingV 'description'.taken. in;tconjunction: 'ilwhichfillustratesla spool embodying the-.several Withfthe. accompanying' :drawings-gx"'inazwliehzrA features fof theA fpresentf: invention, a barrel' or- Fi'g. 1 is. a perspective view fofam assembledyfj core' isfindicated-fat-'Imaand the flanges of theaspool,1apartly cutaway,togbetteritillustrateiithef spool at Il. The barrel or core is-prefera-blyinvention;u constructed of some light and inexpensive Fig: 2 isza verticalizexploded:'sectional wiewffff. =nbre-ns-material1v'such as7 paper or cardboard. illustra-tingthe asseri-ilalygf.j Thew-endliangemmay bemade'-r of any suitable Fg.r 3 is lal1-endV View'inielevationaofeoneitofethex material-suchIasfWOOd, metal', llil'flst, Cardboard" endwflanges,v andz or--the Ilik'ef'and each flangeA is :providedwitlrfa Fig?J 4 isr'antenlargedjfragmentaiy gsectional; small"hole1|2 "at -tl1e-cer1te1. A pluralityp* Viewillustratingztheassembly;-x 30;metallicffmembersz-rl3v are attached to each'iend" spools-pf;thegtypeafherein :disclosedare in;- flange.' l libyrmeans: of Arivets*` l4. The members. tended-*,primarilyfori-ase in vatorfiesw and,-servet:I I3:L maybevlattached to 1 the anges byk `any :other asv temporary Yholders-rior; narrow fabries wi` suitable 1 means*v such as i hyl fbolts, Weldingp andV i; beltingrgwi-ndpw screen spline, -yarn1andthelikm themlikem The'members.al 3i 1arte; made ofV spring` f inatheffaotory,priori-shipment, ,astheicasesma rgmetaliandaeachcomprises: aiat bottom portion. bea-f In the pastis ithas',loeerr-Customary i;o'shiI i I5i provided -withri-rivet holes J6, and; `ap1ongf-.I'l: theg-:materialrffromf,the suppliertotheeonsmner,y bent-to'zamangle ofsslifghtly less than 90E. to7 ther wound @n alarga spool, or:.reel;.Whenfthgma?? bottom portiolrzil i` The; upper; end I8 rof. thea; terial;l was: used up; malaga-spool was;returned;` prongseffl1f;may;y dnen-.tiinwardly:slightly from There are many disadvantages.attendngathis:4m-:thersideaportionzr. A voendpf.; approximately V30wV` methodzfofaoperatiom; In the iirst place, spools is-slrownuimzthe d1'airlines;:athis/anglerbeing-isuie;J require a relatively large capital investment on eientfisthatathe.:outerzends ofthe, prongsfwill the part of theasupplier, fand are;subject to denotfengage :theziinnemwalliof the: core upon asas preciation and damagev in shipment Irriadcli.-y semh'l haThef.metallicgmembersnl 3? 'ares arranged 1;, tion, when the material is shipnemWoundon laztsonmtheisilangersoathat'ftlre.-:approximately '-90= spools, transportation charges must be paid on bendsgsofnthef.memhersrrlie:onthe peripheryfofffa'ff the spool as-Wellas Aon-thematerial; f and if the circle diametenxslightly,agreateri than ;the.1 spool 4iseto be returned ton-fits; startingfmointz; inner-izdiameten-vof: the: core: 16; `Thusya circle` additional@transportation.chargcsflare r1o1i1u1egzL-- drawrrfftovincludeifpoints: onwthe/prongs' aboutai Usi-,ng- :the4 presentinyerltion, :namely --a spoo1 halfwaybetwgeeuvrfthe diangerand; the;outerv endsfi or;-ree1.with;;detachable.angeaathespool or-freel.- I8 of theeprongsffis aplnroximately;:equal:atoflthe.1b is supplied only..once.to..the,consumer. Thereinnerdiametersoffithe core .:.-,Uponinserting.the after, the material is 'shipped wound onto a disprongs:onithecfangeainto:ether pore; 'the'.prongscfs posableifcore, and the consumer attachesfY-eth'ef-f williiextendifinto :thefcoreefon a .distancepfgzap same?.angesvto-eaoh-.oore received. Whenf-r-the rproximatelyipneehalftheir.ilength..Uponfadri ,A

ing the end ange further into the core, the prongs will be sprung inwards slightly and will also dig into the brous core, so that when the end flange is flush with the core, a tight contact has been made between the clips and the core to give a rigid unitary structure. This inward movement of the prongs is facilitated by the resilient character of the fibrous core, the inner surface of which will readily yield to permit the passage of the prongs without in any way disturbing the shape of its outer surface. tendency of the core to rotate with respect to the flanges is arrested by the digging-in action of the prongs.

After the material wound on the core has been used, the end flanges may be removed from the empty core. The metallic members will spring back into their original position, and the end flanges may then be inserted into a loaded core to form a spool therewith.

Any

The number of metallic members provided,

once. in place provides a rigid sturdy unit of great strength that may also be readily disassembled into the original parts when desired.

It will be obvious to those skilled in the art that various changes may be made without departing from the spirit of the invention and therefore the invention is not limited to what is shown in the drawings and described in the specification but only as indicated in the appended claims.

I claim: v

1. A spool having in combination with a core of fibrous or similar material, a flange unit comprising a flange and a plurality of metallicmembers rigidly secured thereto having prongs projecting inwardly from the flange towards the axis of the spool at an angle slightly less than 90 to the flange, said metallic members being arranged on said flange so that the base of the' prongs are arranged on the periphery of a circle of a diameter slightly greater than vthe inner diameter of the core, said prongs adapted for biting engagement at their bases withthe inner wall of the core -upon assembly to obtain rigid' assembly of the flange and the core.

2. A spool having in combination with acore of fibrous or similar material, a flange unit comprising a flange and a plurality of metallic members rigidly secured thereto, said metallic members being bent so as to include an angle of slightly less than 90, said metallic members being arranged on the ange so that the bend in each member coincides with the periphery of a circle of a diameter slightly greater than the inner diameter of the core, said members adapted for biting engagement at their bases with the inner wall of the core upon assembly to obtain a rigid assembly of the flange and the core.

3. A spool having in combination with a core of fibrous or similar material, a flange unit comprising a flange and a plurality of metallic members, each metallic member comprising a fiat Y:strip of spring metal bent once near the middle thereof so as to include an angle of slightly less than and bent a second time near an end thereof through an angle of approximately 30, the fiat portion of each metallic member being rigidly secured to the inner face of the flange so that the point at which the first bend occurs on each member is located on the periphery of a circle of a diameter slightly greater than the inner diameter of the core, said rst bent portions of the members being adapted to bite into the innerwall of the core upon assembly to obtain a rigid assembly of the ange and the core.

4. A spool having in combination with a core of fibrous or similar material, a flange unit comprising a ange and a plurality of metallic members rigidly secured to the inner face thereof with prongs projecting inwardly therefrom t0- ward the axis of the spool at an angle slightly less than 90 to the iiange, said metallic members being peripherally disposed equidistantly from the center of the flange so that the base of each prong is located on the periphery of a circle of a diameter slightly greater than ,the inner diameter of the core with which it is tobe assembled so that the said prongs at their bases `will bite linto the inner wall of the core when assembled thereto to obtain a rigid assembly of the flange and the core.

5. A detachable iiange unit adapted to be readily assembled and disassembled from a core of fibrous or similar material, comprising a flange and a plurality of metallic members rigidly secured thereto having prongs projecting inwardly from the flange toward the axis of the spool at an angle slightly less than 90 to the ange, said metallic members being disposed on said flange so that the base of the prongs are arranged on the periphery of a circle of a diameter slightly greater than the inner diameter of the core with which it is to be assembled, said prongs at their bases being adapted for biting engagement with the inner wall of the said core when so assembled.

6. A detachable flange unit adapted to be readily assembled and disassembled from a core of fibrous or similar material comprising a flange and a plurality of metallic members rigidly secured thereto and projecting inwardly therefrom toward the axis of the spool at angles slightly less than 90, the end of each projecting portion being bent inward slightly towards the centerof the flange, said metallic members being peripherally disposed equidistantly from the center of the flange so that the base `of each projecting portion'is located on the periphery of a circle of a diameter slightly greater than the inner diameter of the core withv which it is to be assembled so that said projecting portions at their bases will bite into the inner wall of the core when so assembled. A

' JEROME SALKIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,542,611 Clark June 16, 1925 1,919,270 Bird July 25, 1933 2,314,749 Wilner Mar. 23, 1943 FOREIGN PATENTS Number Country Date 38,047 Austria July, 26, 1909 

